// Copyright (c) 2011 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "chrome/browser/ui/webui/html_dialog_ui.h" #include "base/bind.h" #include "base/bind_helpers.h" #include "base/lazy_instance.h" #include "base/property_bag.h" #include "base/values.h" #include "chrome/common/chrome_notification_types.h" #include "content/browser/renderer_host/render_view_host.h" #include "content/browser/tab_contents/tab_contents.h" #include "content/public/browser/notification_service.h" #include "content/public/common/bindings_policy.h" static base::LazyInstance > g_html_dialog_ui_property_accessor = LAZY_INSTANCE_INITIALIZER; HtmlDialogUI::HtmlDialogUI(TabContents* tab_contents) : ChromeWebUI(tab_contents) { } HtmlDialogUI::~HtmlDialogUI() { // Don't unregister our property. During the teardown of the TabContents, // this will be deleted, but the TabContents will already be destroyed. // // This object is owned indirectly by the TabContents. WebUIs can change, so // it's scary if this WebUI is changed out and replaced with something else, // since the property will still point to the old delegate. But the delegate // is itself the owner of the TabContents for a dialog so will be in scope, // and the HTML dialogs won't swap WebUIs anyway since they don't navigate. } void HtmlDialogUI::CloseDialog(const base::ListValue* args) { OnDialogClosed(args); } // static base::PropertyAccessor& HtmlDialogUI::GetPropertyAccessor() { return g_html_dialog_ui_property_accessor.Get(); } //////////////////////////////////////////////////////////////////////////////// // Private: void HtmlDialogUI::RenderViewCreated(RenderViewHost* render_view_host) { // Hook up the javascript function calls, also known as chrome.send("foo") // calls in the HTML, to the actual C++ functions. RegisterMessageCallback("DialogClose", base::Bind(&HtmlDialogUI::OnDialogClosed, base::Unretained(this))); // Pass the arguments to the renderer supplied by the delegate. std::string dialog_args; std::vector handlers; HtmlDialogUIDelegate** delegate = GetPropertyAccessor().GetProperty( tab_contents()->GetPropertyBag()); if (delegate) { dialog_args = (*delegate)->GetDialogArgs(); (*delegate)->GetWebUIMessageHandlers(&handlers); } if (0 != (bindings_ & content::BINDINGS_POLICY_WEB_UI)) render_view_host->SetWebUIProperty("dialogArguments", dialog_args); for (std::vector::iterator it = handlers.begin(); it != handlers.end(); ++it) { (*it)->Attach(this); AddMessageHandler(*it); } content::NotificationService::current()->Notify( chrome::NOTIFICATION_HTML_DIALOG_SHOWN, content::Source(this), content::Details(render_view_host)); ChromeWebUI::RenderViewCreated(render_view_host); } void HtmlDialogUI::OnDialogClosed(const ListValue* args) { HtmlDialogUIDelegate** delegate = GetPropertyAccessor().GetProperty( tab_contents()->GetPropertyBag()); if (delegate) { std::string json_retval; if (args && !args->empty() && !args->GetString(0, &json_retval)) NOTREACHED() << "Could not read JSON argument"; (*delegate)->OnDialogClosed(json_retval); } } ExternalHtmlDialogUI::ExternalHtmlDialogUI(TabContents* tab_contents) : HtmlDialogUI(tab_contents) { // Non-file based UI needs to not have access to the Web UI bindings // for security reasons. The code hosting the dialog should provide // dialog specific functionality through other bindings and methods // that are scoped in duration to the dialogs existence. bindings_ &= ~content::BINDINGS_POLICY_WEB_UI; } ExternalHtmlDialogUI::~ExternalHtmlDialogUI() { } bool HtmlDialogUIDelegate::HandleContextMenu(const ContextMenuParams& params) { return false; }